That's total tin-foil horse shit. Law enforcement is signing up for the Neighborhood app. Anyone that shares their video, particularly suspicious persons (attempts at opening doors, auto break-ins, porch pirates) on the app is what they have access to, not your cameras. They probably don't care about the lost pets, bobcat, mountain lion, coyote, and snake videos.
https://shop.ring.com/pages/neighbors
Exposing your computer to the Internet is a whole other attack surface with numerous security issues. Cheap IP cameras also have security risks.